A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 12 rev/s. 80 revolutions later, its angular speed is 24 rev/s. (a) Calculate the angular acceleration. rev/s2 (b) Calculate the time required to complete the 80 revolutions mentioned. (c) Calculate the time required to attain the 12 rev/s angular speed.
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 12 rev/s. 80 revolutions later, its angular speed is 24 rev/s. (a) Calculate the angular acceleration. rev/s2 (b) Calculate the time required to complete the 80 revolutions mentioned. (c) Calculate the time required to attain the 12 rev/s angular speed.
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter13: Rotation Ii: A Conservation Approach
Section: Chapter Questions
Problem 7PQ: A 12.0-kg solid sphere of radius 1.50 m is being rotated by applying a constant tangential force of...
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